CN116263031A - Antivirus finishing method for bedding fabric of train - Google Patents

Antivirus finishing method for bedding fabric of train Download PDF

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Publication number
CN116263031A
CN116263031A CN202211570330.5A CN202211570330A CN116263031A CN 116263031 A CN116263031 A CN 116263031A CN 202211570330 A CN202211570330 A CN 202211570330A CN 116263031 A CN116263031 A CN 116263031A
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antiviral
train
finishing agent
finishing
fabric
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CN116263031B (en
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沈张先
黄金生
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Hangzhou Huali Industrial Group Co ltd
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Hangzhou Huali Industrial Group Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/352—Heterocyclic compounds having five-membered heterocyclic rings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
    • D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
    • D06M13/262—Sulfated compounds thiosulfates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The invention relates to the technical field of antivirus finishing methods, and discloses an antivirus finishing method for train bedding fabrics, which comprises the following steps: (1) Treating the fabric with a pretreatment solution, ultrasonically cleaning, and drying for later use; (2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 40-50 g/L, padding the fabric in the step (1) in the antiviral finishing agent, and then sequentially pre-drying, tentering and shaping; the antiviral finishing agent is an organic isothiazolinone finishing agent or a modified antiviral finishing agent. The antivirus fabric is prepared by padding the train bedding fabric through the antivirus finishing agent, has a good antivirus effect on the surface of the fabric, can inhibit the growth and propagation of viruses, further weaken the transmission of germs and viruses, strengthen the prevention and control of infection sources and reduce the harm of sudden and epidemic germs and viruses.

Description

Antivirus finishing method for bedding fabric of train
Technical Field
The invention relates to the technical field of antivirus finishing methods, in particular to a antivirus finishing method for train bedding fabrics.
Background
Vehicles such as high-speed rail cars play an increasingly important role in passenger transport services, but have the characteristics of relatively closed space, dense crowd, high personnel mobility and higher environmental temperature, and are particularly easy to cause cross infection of personnel. In our living environment, there are a wide variety of pathogenic microorganisms, which means microorganisms that can invade the human body, causing infection or even infectious disease, also called pathogens. They are widely varied and widely distributed and can be used to spread diseases by direct or indirect contact with the human body.
The main mechanisms of the adsorption of pathogenic microorganisms on the surface are physical adsorption and electrostatic interaction, and the adsorption amount on the surface is a linear functional of the square root of time, so that the longer the pathogenic microorganisms stay on the surface, the more likely the pathogenic microorganisms are strongly adsorbed on the surface, so that the pathogenic microorganisms attack the human body. One strategy to reduce pathogenic infection is to reduce the time for pathogenic microorganisms to interact with the material, while another strategy is to impart surface characteristics to the material that are detrimental to the virus. For public places with large personnel flow and dense crowds such as high-speed rail, the environment is usually killed before the train goes out, but effective and comprehensive control cannot be performed in a long time of train operation, and particularly textiles with close contact with human bodies and high probability of adsorbing pathogenic microorganisms such as train bedding are easy to cause cross infection. At present, under the condition that occupational diseases, chronic diseases, disease-related organisms, infectious diseases and other diseases are increasingly highlighted, the prevention and control work of the high-speed rail diseases must be enhanced, the control, the sterilization and the inactivation of pathogenic microorganisms in public environments are well done, and the development of railway public health enterprises in China is promoted.
The Chinese patent publication No. CN111851071A discloses an antiviral finishing agent which comprises the following components in parts by weight: 30-50 parts of guanidine compound; 10-20 parts of organic silicon quaternary ammonium salt compound; 5-10 parts of metal salt; 50-80 parts of water. However, although the antibacterial finishing agent can resist washing of nonionic surfactant and cationic surfactant, most of daily used detergents contain anionic surfactant, when fabrics are washed, cationic quaternary ammonium salt bonded on the fiber surface is easy to combine with the anionic surfactant, so that the antibacterial function of the fabrics is reduced or lost, and the washing fastness is poor.
Disclosure of Invention
In order to improve the technical problem of virus resistance of the bedding fabric of the train, the invention provides an antivirus finishing method of the bedding fabric of the train, which can weaken the transmission of germs and viruses, inhibit the growth and propagation of viruses, strengthen the prevention and control of infection sources, effectively control the bedding fabric of the train in a long time and reduce the harm of sudden and epidemic germs and viruses.
The specific technical scheme of the invention is as follows: the invention provides an antivirus finishing method for train bedding fabrics, which comprises the following steps:
(1) Treating the fabric with a pretreatment solution, ultrasonically cleaning, and drying for later use;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 40-50 g/L, padding the fabric in the step (1) in the antiviral finishing agent, and then sequentially pre-drying, tentering and shaping; the antiviral finishing agent is an organic isothiazolinone finishing agent or a modified antiviral finishing agent.
The application processing of the antiviral finishing agent on textiles is mainly divided into fiber modification processing and post-finishing processing. The fiber modification processing combines the traditional spinning method with the antiviral material, and the antiviral fiber is directly prepared by blending the antiviral material and the spinning solution, but the antiviral finishing agent is required to have good dispersibility and spinnability, and the original quality of the fiber can be greatly influenced. The post-finishing processing generally refers to a padding, impregnating or coating method, wherein the padding and impregnating are more in application and simple in operation, and the fabric prepared by the method has remarkable antiviral effect and has less influence on the original performance of the fabric.
The isothiazolinone compound is a high-efficiency broad-spectrum bactericide, and mainly depends on hydrogen bond formed by active part on heterocycle and basic group in protein in bacteria body to adsorb on bacterial cell, thereby destroying intracellular structure to lose replicative capacity and cause cell death. The antivirus fabric is prepared by padding the train bedding fabric through the antivirus finishing agent, has a good antivirus effect on the surface of the fabric, can inhibit the growth and propagation of viruses, further weaken the transmission of germs and viruses, strengthen the prevention and control of infection sources and reduce the harm of sudden and epidemic germs and viruses.
Preferably, in the step (1), the pretreatment solution is a sodium dodecyl sulfate solution, and the mass concentration is 0.4 to 0.8%.
Preferably, in the step (1), the ultrasonic cleaning is performed by using water, and the bath ratio is 1:15-20.
Preferably, in step (2), the organic isothiazolinone finish is one or more of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one and 1, 2-benzisothiazolin-3-one.
Preferably, the preparation method of the modified antiviral finishing agent comprises the following steps:
(a) Dispersing chitosan in an aqueous solution of L-tartaric acid, adding concentrated sulfuric acid after ultrasonic treatment, placing the mixed solution in a reaction kettle, heating to 70-75 ℃, and stirring for reaction for 50-60 min; then adding 1, 2-benzisothiazolin-3-one, heating to reflux for 2-3 h, and performing rotary evaporation to obtain a reactant I;
(b) Phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azodiisobutyronitrile and dimethylbenzene are mixed and reacted for 4 to 5 hours at the temperature of 140 to 150 ℃ to remove water; adding n-butyl alcohol, uniformly stirring, heating to 90-95 ℃, adding n-butyl titanate, a silane coupling agent, nano titanium dioxide and dibutyl tin dilaurate, and stirring for reacting for 5-6 h; then decompressing and distilling to obtain a reactant II;
(c) And stirring the reactant II and dropwise adding the reactant I at the same time to obtain the modified antiviral finishing agent.
The antiviral fabric obtained by padding method has good antiviral effect, but the durability and washing fastness of the antiviral effect are still to be further improved. The modified antiviral finishing agent takes 1, 2-benzisothiazolin-3-one as a main antiviral component, and chitosan is used for enhancing antiviral and antibacterial effects. After the chitosan is treated by ultrasonic wave under the action of acid, the chitosan with lower molecular weight, higher uniformity and better dispersivity can be obtained, and simultaneously the content of hydroxyl and carboxyl can be effectively improved by grafting with L-tartaric acid, the mutual attraction effect of hydrogen bonds between the chitosan and 1, 2-benzisothiazolin-3-one is enhanced, the combination between 1, 2-benzisothiazolin-3-one and chitosan is facilitated,improving stability and synergistic antiviral effect. Then coating with alkyd resin, wherein the alkyd resin contains silver ion doped nano titanium dioxide, which can absorb light quanta to excite electrons of valence band to form electron-hole pairs when being irradiated by light, thereby generating OH free radical and superoxide O 2- All are strong oxidants that attack the unsaturated bonds of the organic matter or abstract its hydrogen atoms, causing the decomposition of lipids. Therefore, the antibacterial and antiviral effects can be achieved by killing bacteria and decomposing the bacteria, and the internal antiviral components can be released, so that a better slow release effect is achieved.
In addition, the coating of the alkyd resin can enhance the adhesive force between the antiviral finishing agent and the fabric fibers, so that the antiviral finishing agent permeates into the fabric, the washing fastness of the carpet is improved, the slow release effect is added, the dissolution rate of the alkyd resin in the carpet washing process is reduced, and the action durability of the alkyd resin is enhanced.
Preferably, in the step (a), the viscosity of the chitosan is 200 to 300mpa·s; the mass concentration of the aqueous solution of the L-tartaric acid is 5-6%; the mass ratio of the chitosan to the aqueous solution of L-tartaric acid to the concentrated sulfuric acid to the 1, 2-benzisothiazolin-3-one is 1:50:0.1:10 to 12; in the step (c), the mass ratio of the reactant I to the reactant II is 1:9 to 10.
The L-tartaric acid is also a good complexing agent, has the performances of oxidation resistance and high temperature resistance, and can improve the stability of internal antiviral components. In addition, the viscosity of chitosan affects its dispersibility and water solubility, and affects the effect of L-tartaric acid. The mass ratio of the raw materials is related to the stability and the sustained-release effect of the modified antiviral finishing agent, and the better effect can be achieved through the control and coordination effects.
Preferably, in the step (b), the mass ratio of phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene is 9 to 11: 1-2: 0.8 to 1.3: 15-18: 10 to 12:0.04 to 0.05:50; the mass ratio of the n-butyl alcohol to the coconut oil is 60-70: 0.1; the mass ratio of the n-butyl alcohol to the n-butyl titanate to the silane coupling agent to the nano titanium dioxide to the dibutyl tin dilaurate is 60-70: 4 to 5:0.5 to 0.7:0.05 to 0.1:0.05; the particle size of the nano titanium dioxide is not more than 50nm.
Preferably, in the step (2), the padding is: padding for 5-15 min according to the bath ratio of 1:10-15, and the rolling surplus rate is 70-80%.
The bath ratio, the rolling surplus ratio and the binding property between the antiviral finishing agent and the fabric are correlated, and the binding property in this range is good.
Preferably, in the step (2), the temperature of the preliminary drying is 100 to 105 ℃.
Preferably, in the step (2), the tentering setting is performed at 170 to 175 ℃ for 25 to 35 seconds.
Compared with the prior art, the invention has the following beneficial effects:
(1) The antivirus fabric is prepared by padding the train bedding fabric through the antivirus finishing agent, has good antivirus effect on the surface of the fabric, can inhibit the growth and propagation of viruses, further weaken the transmission of germs and viruses, strengthen the prevention and control of infection sources and reduce the harm of sudden, epidemic germs and viruses;
(2) The modified antiviral finishing agent has good slow-release antiviral effect, can also enhance the adhesive force between the modified antiviral finishing agent and fabric fibers, so that the modified antiviral finishing agent permeates into the fabric, improves the washing fastness of the carpet, and reduces the dissolution rate of the modified antiviral finishing agent in the carpet washing process and enhances the action durability of the modified antiviral finishing agent.
Detailed Description
The invention is further described below with reference to examples.
General examples
An antivirus finishing method for train bedding fabrics comprises the following steps:
(1) Treating the fabric with 0.4-0.8% sodium dodecyl sulfate solution, ultrasonically cleaning with water in the bath ratio of 1:15-20, and stoving;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 40-50 g/L, padding the fabric in the step (1) in the antiviral finishing agent for 5-15 min according to the bath ratio of 1:10-15, wherein the padding residual rate is 70-80%, pre-drying at 100-105 ℃, and finally tentering and shaping at 170-175 ℃ for 25-35 s to obtain the train bedding fabric after antiviral finishing.
The antiviral finishing agent is an organic isothiazolinone finishing agent, and specifically is one or more of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one and 1, 2-benzisothiazolin-3-one.
Or the antiviral finishing agent is modified antiviral finishing agent, and the preparation method comprises the following steps:
(a) Dispersing chitosan with the viscosity of 200-300 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 5-6%, carrying out ultrasonic treatment for 30-40 min, adding concentrated sulfuric acid, placing the mixed solution in a reaction kettle, heating to 70-75 ℃, and stirring for reaction for 50-60 min; then adding 1, 2-benzisothiazolin-3-one, heating to reflux for 2-3 h, and performing rotary evaporation to obtain a reactant I; the mass ratio of the chitosan to the aqueous solution of L-tartaric acid to the concentrated sulfuric acid to the 1, 2-benzisothiazolin-3-one is 1:50:0.1:10 to 12;
(b) The mass ratio is 9-11: 1-2: 0.8 to 1.3: 15-18: 10 to 12:0.04 to 0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azodiisobutyronitrile and xylene are mixed and reacted for 4 to 5 hours at 140 to 150 ℃ to remove water; adding n-butyl alcohol and uniformly stirring, wherein the mass ratio of the n-butyl alcohol to the coconut oil is 60-70: 0.1, heating to 90-95 ℃, adding n-butyl titanate, nano titanium dioxide (particle size not more than 50 nm) and dibutyl tin dilaurate, and stirring for reacting for 5-6 h, wherein the mass ratio of the n-butyl alcohol to the n-butyl titanate to the nano titanium dioxide to the dibutyl tin dilaurate is (60-70): 4 to 5:0.05 to 0.1:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1: 9-10, and obtaining the modified antiviral finishing agent.
Example 1
An antivirus finishing method for train bedding fabrics comprises the following steps:
(1) Treating the fabric with 0.5% sodium dodecyl sulfate solution for 3 times, washing with water, ultrasonic cleaning in water for 10min with bath ratio of 1:20, and oven drying at 100deg.C;
(2) Preparing an antiviral finishing liquid with the concentration of 50g/L by using 5-chloro-2-methyl-4-isothiazolin-3-one and water, padding the fabric in the step (1) in the antiviral finishing liquid for 10 minutes according to the bath ratio of 1:15, wherein the rolling surplus rate is 75%, pre-baking at 100 ℃, and finally tentering and shaping for 30 seconds at 170 ℃ to obtain the train bedding fabric after antiviral finishing.
Example 2
An antivirus finishing method for train bedding fabrics comprises the following steps:
(1) Treating the fabric with 0.5% sodium dodecyl sulfate solution for 3 times, washing with water, ultrasonic cleaning in water for 10min with bath ratio of 1:20, and oven drying at 100deg.C;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 50g/L, padding the fabric in the step (1) in the antiviral finishing agent for 10min according to the bath ratio of 1:15, wherein the rolling surplus rate is 75%, pre-drying at 100 ℃, and finally tentering and shaping for 30s at 170 ℃ to obtain the train bedding fabric after antiviral finishing.
The preparation method of the modified antiviral finishing agent comprises the following steps of:
(a) Dispersing chitosan with the viscosity of 260 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 6%, carrying out ultrasonic treatment for 35min, adding concentrated sulfuric acid (with the mass concentration of 98%), placing the mixed solution in a reaction kettle, heating to 75 ℃, and stirring for reaction for 50min; then, adding 1, 2-benzisothiazolin-3-one, and heating to reflux reaction for 2h, wherein the mass ratio of chitosan to L-tartaric acid aqueous solution to concentrated sulfuric acid to 1, 2-benzisothiazolin-3-one is 1:50:0.1:11; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 10:1.6:1.3:15:10:0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150℃for 4 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 95 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 30 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:5:0.1:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:10, obtaining the modified antiviral finishing agent.
Example 3
An antivirus finishing method for train bedding fabrics comprises the following steps:
(1) Treating the fabric with 0.5% sodium dodecyl sulfate solution for 3 times, washing with water, ultrasonic cleaning in water for 10min with bath ratio of 1:20, and oven drying at 100deg.C;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 50g/L, padding the fabric in the step (1) in the antiviral finishing agent for 10min according to the bath ratio of 1:15, wherein the rolling surplus rate is 75%, pre-drying at 100 ℃, and finally tentering and shaping for 30s at 170 ℃ to obtain the train bedding fabric after antiviral finishing.
The preparation method of the modified antiviral finishing agent comprises the following steps of:
(a) Dispersing chitosan with the viscosity of 300 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 5%, carrying out ultrasonic treatment for 40min, adding concentrated sulfuric acid, placing the mixed solution in a reaction kettle, heating to 75 ℃, and stirring for reaction for 60min; then, adding 1, 2-benzisothiazolin-3-one, and heating to reflux reaction for 2h, wherein the mass ratio of chitosan to L-tartaric acid aqueous solution to concentrated sulfuric acid to 1, 2-benzisothiazolin-3-one is 1:50:0.1:10; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 10:1.6:1.3:15:10:0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150℃for 4 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 90 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 30 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:5:0.06:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:10, obtaining the modified antiviral finishing agent.
Example 4
An antivirus finishing method for train bedding fabrics comprises the following steps:
(1) Treating the fabric with 0.5% sodium dodecyl sulfate solution for 3 times, washing with water, ultrasonic cleaning in water for 10min with bath ratio of 1:20, and oven drying at 100deg.C;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 50g/L, padding the fabric in the step (1) in the antiviral finishing agent for 10min according to the bath ratio of 1:15, wherein the rolling surplus rate is 75%, pre-drying at 100 ℃, and finally tentering and shaping for 30s at 170 ℃ to obtain the train bedding fabric after antiviral finishing.
The preparation method of the modified antiviral finishing agent comprises the following steps of:
(a) Dispersing chitosan with the viscosity of 200 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 6%, carrying out ultrasonic treatment for 30min, adding concentrated sulfuric acid, placing the mixed solution in a reaction kettle, heating to 75 ℃, and stirring for reaction for 55min; then, adding 1, 2-benzisothiazolin-3-one, and heating to reflux reaction for 3h, wherein the mass ratio of chitosan to L-tartaric acid aqueous solution to concentrated sulfuric acid to 1, 2-benzisothiazolin-3-one is 1:50:0.1:12; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 9:1.2:1.3:18:12:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150 ℃ for 5 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 95 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 40 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:4:0.06:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:9, obtaining the modified antiviral finishing agent.
Comparative example 1
The difference from example 2 is that: in the preparation method of the modified antiviral finishing agent, L-tartaric acid is not added.
The preparation method comprises the following steps:
(a) The chitosan with the viscosity of 260 mPas is connected into water, then 1, 2-benzisothiazolin-3-one is added, the temperature is raised to reflux reaction for 2 hours, wherein the mass ratio of the chitosan, the water and the 1, 2-benzisothiazolin-3-one is 1:50:11; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 10:1.6:1.3:15:10:0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150℃for 4 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 95 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 30 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:5:0.1:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:10, obtaining the modified antiviral finishing agent.
Comparative example 2
The difference from example 2 is that: in the preparation method of the modified antiviral finishing agent, chitosan is not added.
The preparation method comprises the following steps:
(a) Dispersing 1, 2-benzisothiazolin-3-one in an aqueous solution of L-tartaric acid with the mass concentration of 6%, and heating to reflux for 2h, wherein the mass ratio of the aqueous solution of L-tartaric acid to the 1, 2-benzisothiazolin-3-one is 50:11; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 10:1.6:1.3:15:10:0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150℃for 4 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 95 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 30 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:5:0.1:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:10, obtaining the modified antiviral finishing agent.
Comparative example 3
The difference from example 2 is that: in the preparation method of the modified antiviral finishing agent, the viscosity of chitosan is too high.
The preparation method comprises the following steps:
(a) Dispersing chitosan with the viscosity of 400 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 6%, carrying out ultrasonic treatment for 35min, adding concentrated sulfuric acid (with the mass concentration of 98%), placing the mixed solution in a reaction kettle, heating to 75 ℃, and stirring for reaction for 50min; then, adding 1, 2-benzisothiazolin-3-one, and heating to reflux reaction for 2h, wherein the mass ratio of chitosan to L-tartaric acid aqueous solution to concentrated sulfuric acid to 1, 2-benzisothiazolin-3-one is 1:50:0.1:11; then the reactant I is obtained after rotary evaporation;
(b) The mass ratio is 10:1.6:1.3:15:10:0.05:50 phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azobisisobutyronitrile and xylene were mixed and reacted at 150℃for 4 hours to remove moisture; adding n-butyl alcohol, uniformly stirring, heating to 95 ℃, adding n-butyl titanate, nano titanium dioxide (average particle size is 30 nm) and dibutyl tin dilaurate, and stirring for reacting for 5 hours, wherein the mass ratio of coconut oil, n-butyl alcohol, n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate is 0.1:60:5:0.1:0.05; then decompressing and distilling to obtain a reactant II;
(c) Stirring a reactant II and dropwise adding the reactant I at the same time, wherein the mass ratio of the reactant I to the reactant II is 1:10, obtaining the modified antiviral finishing agent.
Comparative example 4
The difference from example 2 is that: in the preparation method of the modified antiviral finishing agent, alkyd resin coating is not used.
The preparation method comprises the following steps:
(a) Dispersing chitosan with the viscosity of 260 mPas in an aqueous solution of L-tartaric acid with the mass concentration of 6%, carrying out ultrasonic treatment for 35min, adding concentrated sulfuric acid (with the mass concentration of 98%), placing the mixed solution in a reaction kettle, heating to 75 ℃, and stirring for reaction for 50min; then, adding 1, 2-benzisothiazolin-3-one, and heating to reflux reaction for 2h, wherein the mass ratio of chitosan to L-tartaric acid aqueous solution to concentrated sulfuric acid to 1, 2-benzisothiazolin-3-one is 1:50:0.1:11; and then the reactant I, namely the modified antiviral finishing agent, is obtained after rotary steaming.
Performance testing
Mechanical property test: reference standard GB/T3923.1 "textile fabric tensile properties part 1: determination of breaking Strength and elongation at break (bar sample method), "textile fabric tear Property part 3", GB/T3917.3: determination of tear Strength by the trapezoid method.
Antiviral performance test: reference standard ISO 18184:2019 test for antiviral Properties of textiles.
Antibacterial performance test: reference standard GB/T20944-2007 evaluation of antibacterial Properties of textiles.
Wash fastness performance test: simulation of home laundering process laundering, immersing the antiviral finished fabric in water, bath ratio 1:50, the temperature is 25 ℃, the washing time is 15min, and the antiviral property after 50 times of washing is measured.
Testing the performance under natural light: and (3) placing the fabric subjected to antiviral finishing under natural illumination for 30min, and testing the antibacterial performance and antiviral performance of the fabric.
Table 1 mechanical properties of train bedding fabrics after virus resistant finishing
Figure BDA0003987647340000091
Table 2 antiviral properties of train bedding fabrics after antiviral finishing
Figure BDA0003987647340000092
TABLE 3 antiviral Properties of bedding fabrics for trains under Natural light
Figure BDA0003987647340000093
As shown in Table 1, the antiviral finishing agent has good antiviral effect on the surface of the fabric, can inhibit the growth and propagation of viruses, further weaken the transmission of germs and viruses, strengthen the prevention and control of infection sources, reduce the harm of sudden and epidemic germs and viruses, and has good mechanical properties after washing. And the modified antivirus finishing agent has better washing fastness and durability, and is more beneficial to the use of bedding fabrics of trains. As can be seen from tables 2-3, comparative example 1 shows that the absence of L-tartaric acid results in a low degree of dispersion of chitosan and significantly reduces the loading of 1, 2-benzisothiazolin-3-one, reducing the antiviral effect. Comparative example 2 shows that the absence of chitosan also reduces the loading of 1, 2-benzisothiazolin-3-one and the synergistic antiviral effect of chitosan itself. Comparative example 3 shows that too high a viscosity of chitosan will result in a low degree of dispersion and agglomeration of the macromolecular chains will also reduce the loading of 1, 2-benzisothiazolin-3-one. Comparative example 4 shows that the antiviral component has no slow release effect after not being coated with alkyd resin, and the antibacterial and antiviral effects are somewhat reduced after long-time light treatment.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural transformation made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (10)

1. An antivirus finishing method for a train bedding fabric is characterized by comprising the following steps:
(1) Treating the fabric with a pretreatment solution, ultrasonically cleaning, and drying for later use;
(2) Preparing an antiviral finishing agent into an aqueous solution with the concentration of 40-50 g/L, padding the fabric in the step (1) in the antiviral finishing agent, and then sequentially pre-drying, tentering and shaping;
the antiviral finishing agent is an organic isothiazolinone finishing agent or a modified antiviral finishing agent.
2. The antivirus finishing method of the train bedding fabric according to claim 1, wherein in the step (1), the pretreatment solution is a sodium dodecyl sulfate solution with a mass concentration of 0.4-0.8%.
3. The antivirus finishing method of the train bedding fabric according to claim 1 or 2, wherein in the step (1), the ultrasonic cleaning is carried out by using water, and the bath ratio is 1:15-20.
4. The antiviral finishing method of a train bedding fabric of claim 1, wherein in step (2), the organic isothiazolinone finishing agent is one or more of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one and 1, 2-benzisothiazolin-3-one.
5. The method of anti-virus finishing of train bedding fabrics of claim 1, wherein the method of preparing the modified anti-virus finishing agent comprises the steps of:
(a) Dispersing chitosan in an aqueous solution of L-tartaric acid, adding concentrated sulfuric acid after ultrasonic treatment, placing the mixed solution in a reaction kettle, heating to 70-75 ℃, and stirring for reaction for 50-60 min; then adding 1, 2-benzisothiazolin-3-one, heating to reflux for 2-3 h, and performing rotary evaporation to obtain a reactant I;
(b) Phthalic anhydride, isophthalic acid, pentaerythritol, trimethylolpropane, coconut oil, azodiisobutyronitrile and dimethylbenzene are mixed and reacted for 4 to 5 hours at the temperature of 140 to 150 ℃ to remove water; adding n-butyl alcohol, uniformly stirring, heating to 90-95 ℃, adding n-butyl titanate, nano titanium dioxide and dibutyl tin dilaurate, and stirring for reacting for 5-6 hours; then decompressing and distilling to obtain a reactant II;
(c) And stirring the reactant II and dropwise adding the reactant I at the same time to obtain the modified antiviral finishing agent.
6. The antiviral finishing method of a train bedding fabric according to claim 5, wherein in the step (a), the viscosity of the chitosan is 200-300 mpa-s; the mass concentration of the aqueous solution of the L-tartaric acid is 5-6%; the mass ratio of the chitosan to the aqueous solution of L-tartaric acid to the concentrated sulfuric acid to the 1, 2-benzisothiazolin-3-one is 1:50:0.1: 10-12 parts; in the step (c), the mass ratio of the reactant I to the reactant II is 1: 9-10.
7. The antiviral finishing method of the train bedding fabric according to claim 5, wherein in the step (b), the mass ratio of the n-butyl alcohol to the coconut oil is 60-70: 0.1; the mass ratio of the n-butyl alcohol to the n-butyl titanate to the nano titanium dioxide to the dibutyl tin dilaurate is 60-70: 4-5: 0.05-0.1: 0.05; the particle size of the nano titanium dioxide is not more than 50nm.
8. The method of anti-virus finishing of train bedding fabrics according to claim 1 or 4 or 5, wherein in step (2), the padding is: padding for 5-15 min according to the bath ratio of 1:10-15, wherein the rolling residue rate is 70-80%.
9. The method for antivirus finishing of train bedding fabrics according to claim 1, 4 or 5, wherein in the step (2), the pre-baking temperature is 100-105 ℃.
10. The method for antivirus finishing of train bedding fabrics according to claim 1, 4 or 5, wherein in the step (2), the tentering setting is tentering setting at 170-175 ℃ for 25-35 s.
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CN113243381A (en) * 2021-05-31 2021-08-13 浙江先拓环保科技有限公司 Composite mildew-proof antibacterial agent and preparation method thereof
CN114960189A (en) * 2022-06-14 2022-08-30 深圳市亿卓服饰科技有限公司 Elastic silk fabric and preparation method thereof
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CN103668975A (en) * 2012-09-21 2014-03-26 青岛道合生物科技有限公司 Rot resistant finishing agent special for textiles
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